/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraFunctionLibrary.h
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=Niagara, Meta=(DisplayName="Set Niagara Static Mesh Directly")) static void OverrideSystemUserVariableStaticMesh ( [UNiagaraComponent](API\Plugins\Niagara\UNiagaraComponent) * NiagaraSystem, const [FString](API\Runtime\Core\Containers\FString) & OverrideName, [UStaticMesh](API\Runtime\Engine\Engine\UStaticMesh) * StaticMesh )